Due to Plex’s business model, a license from Dolby is required to transcode or tonemap Dolby Vision video.
Plex has no such license.
If you play DV profile 5 media on a device that does not support it, the following may happen:
- Plex will refuse to play the media and return a “Color Space Not Supported” message.
- Plex will direct play the media, but the colors will be off (this happens with Plex for Windows, not sure about other clients).
If the device supports DV Profile 5 media, but transcoding is required due to bandwidth or other limitations, Plex will refuse to play the media and return an error message.
If you phone does not support HDR media or transcoding is required due to bandwidth or other limitations, Plex Media Server will transcode and tonemap the media.
However, Plex does not support using Nvidia GPU for tonemapping HDR10 to SDR ( Ref: HDR to SDR Tonemapping).
Therefore tonemapping will use the CPU.
If you want, attach a set of DEBUG level server log files. Someone familiar with transcoding/tonemapping on Windows systems may be able to assist.
- Ensure your system is configured for debug level logs.
Settings → Server_Name → General + Show Advanced
- Restart Plex Media Server.
- Re-create the problem.
Play a HDR movie on your phone. Let it play for ~30 seconds. - Stop playback.
- Pull the log files (Settings → Troubleshooting) and attach the entire ZIP file to the thread.
Drag the file into the message window. It will attach at the cursor location.
Online trailers are provided by Plex’s media partners. Higher resolution trailers may not be available for some titles.
Unknown. Plex rarely reveals its business and product plans.
